Gamma-ray detection from neutralino annihilation in non-universal SUGRA scenarios

2004/07/31 by Yann Mambrini, Y. Mambrini, C. Munoz +1 · 1 citation
Physics and Astronomy · #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Particle physics theoretical and experimental studies #astro-ph #hep-ph

paper · pdf · doi:10.1016/j.astropartphys.2005.06.007

published as Astropart.Phys.24:208-230,2005 · 37 pages, 26 figures, final version to appear in Astropart. Phys

arxiv created 2005/06/27 · openalex publication_date 2005/08/03 · arxiv updated 2011/05/23 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/29

Abstract

We analyze the indirect detection of neutralino dark matter in supergravity scenarios with non-universal soft scalar and gaugino masses. In particular, the gamma-ray flux arising from the galactic center due to neutralino annihilation is computed. In important regions of the parameter space it can be increased significantly (about two orders of magnitude) with respect to the universal scenario. This result is compared with the sensitivity of current and planned experiments, such as the satellite-based detectors EGRET and GLAST and the ground-based atmospheric telescope HESS. For example, for tanβ< 35 the sensitivity region of GLAST and HESS can only be reached in non-universal scenarios.

Citations

• Searching for TeV dark matter by atmospheric Čerenkov techniques
• Phenomenological aspects of heterotic orbifold models at one loop
• First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Preliminary Maps and Basic Results
• Broad-band diffuse gamma ray emission of the Galactic Disk

Cited by

• Direct, indirect and collider detection of neutralino dark matter in SUSY models with non-universal Higgs masses